You don’t need to wrestle with BCDEDIT if you want to change how Windows Vista boots, especially on a multiboot system. Use the free VistaBootPRO instead.
As you’ve seen [Hack #10] hacking the way that Windows Vista boots is pretty tough if your only tool is the command-line interface.
There’s a much better solution than going mano [...]

Edit or create a startup menu that lets you choose which operating system to boot into in multiboot systems, or create a menu that lets you choose different startup options for your single operating system if you have only XP installed.
If you’ve installed another operating system (in addition to XP) on your system, your PC [...]